Explosion at O'Hare Airport in Chicago

A checked bag that exploded at Chicago's O'Hare airport today contained a battery, according to initial reports, and officials do not see a nexus to terror.

A baggage handler suffered minor injuries after a bag coming off a plane at Gate C16 at the United Airlines terminal exploded. Officials found the passenger who had checked the bag and questioned him.

According to law enforcement officials, initial reports indicate that one of 12 bags the passenger checked contained a battery. When a baggage handler moved the bag, the contents exploded, injuring his arm.

"We believe that a battery being shipped in a container exploded while being handled by a United employee," the Chicago Fire Department said in a statement. "This is believed to be an accidental discharge. No criminal activity is suspected at this time."

The statement also said the Chicago Fire Department and Chicago Police Department are inspecting another container.

The Chicago Police Department has set up a perimeter and bomb dogs are on the scene.

"TSA is aware of a suspicious item in a checked bag in the C concourse of Chicago O'Hare International Airport (ORD)," the Transportation Security Administration said in a statement. "Local authorities and the FBI are on scene. The owner of the bag has been identified and is being interviewed by law enforcement. To ensure the safety of those in the area, a perimeter has been established while local authorities investigate."